display AUDI A4 1998 B5 / 1.G Brakes ABS EDL ASR Bosch 5.3 Workshop Manual

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ABS/EDL/ASR Bosch 5.3

Warning light, functional overview


If On Board Diagnostic (OBD) has detected a
malfunction in the system, it indicates the
malfunction by lighting up warning lamps when
ignition is switched on. The warning lamps are
located in the instrument cluster.

Instrument cluster without DIS
The illustration shows the ABS/EDL warning light -K47- (right arrow),
the warning light for brake system -K118- (center arrow, red symbol
for "brake system malfunction") and the traction control indicator light -
K86- (left arrow).

Instrument cluster with DIS
For DIS, there is no warning light for brake system -K118-. The red
"brake system malfunction" symbol appears in the display. If the ABS/EDL warning light -K47 and the red symbol for "Brake
system malfunction" are not lit, but the brake system is not functioning
properly, check for malfunctions in the mechanical/hydraulic brake
system components.
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11/20/2002 htt
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ABS/EDL
-K47- Brake
system ASR

-
K86-
1) Reasons why the indicator lamps light up









X









X









X1) The vehicle can be equipped either with or without ASR. The ABS/EDL lamp remains
constantly lit after ignition is switched on and the the red "brake system malfunction" symbol
also lights up 3 seconds after ignition is switched on.
WARNING!
Driving the vehicle presents the risk of accident! The brake system will only be partially
functional. Because brake pressure at the rear wheels is no longer regulated vie
Electronic Brake Distribution (EBD), the rear wheels tend to brake excessively. This
causes the rear of the vehicle to break loose.
For all vehicles:

The VAG1551 Scan Tool (ST) is connected and the data link to the ABS control module
(w/EDL) -J104- was established. For vehicles with automatic transmission and high-line
instrument cluster, the red "brake system malfunction" symbol does not appear
immediately after the ignition is switched on. Instead, the note "Depress brake pedal
before engaging gear" appears in the display. Press the brake pedal and select a gear.
The red brake warning light appears, if the light control is working properly.
On Board Diagnostic (OBD) recognized a malfunction that led to deactivation of Electronic
Brake Distribution (EBD), ABS, EDL or ASR. "Check DTC memory" page 01
-187

1) The traction control indicator light is only available in vehicles equipped with ASR.
Pa
ge 7 of 11 ABS/EDL/ASR Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.9